This item is a manual for the MUPET multiplexer system used with Commodore PET/CBM computers. The document, produced by Canadian Micro Distributors Ltd., dates to 1981 and describes the MUPET system as a software-transparent IEEE multiplexer designed to link multiple PET/CBM machines to shared IEEE peripherals (such as disk drives, printers, or modems). It covers system components, installation procedures, configuration options, and operational guidelines, including how the controller and modules interact, the Double MUPET option, cabling, addressing, and basic troubleshooting. The manual provides typical performance figures, supported peripherals, planning considerations for installations, and maintenance notes including warranty information. The material supports understanding the hardware-software integration of MUPET in multi-computer setups and its use with common Commodore IEEE devices.

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